Re: Prepare for...
"unless an image is explicitly provided as such"
This area of international law is a minefield.
Fix one area, step back ... and BOOM!
I invested some time photographing my village; storing them on Flicker.
I will have ticked a box, explicitly allowing these to be openly published (for everyone to benefit, if they so wished).
However, some moron set up an an automated image grab of Flicker thumbnails, linked to his own site (hive - or something like that).
It seems that he grabbed the entire database (using the flicker api apparently) - so he got millions of thumbnails.
The thumbnails then proceeded to pollute the browser 'image search' system, in place of the originals.
... and clicking the thumbnail loads the hive site, not the original.
All my work was wasted - the images were for the public, and all they get is a crappy thumbnail.
Therefore, in this automated environment 'explicit authorisation' is a mess, because the full consequences cannot be foreseen.
Even Flicker lost out, because instead of link-backs promoting their site, the images were promoting the morons site.
Mine surely, for ticking a box.
Flicker's for enabling the mass image grab.
But ultimately ... how do you define 'explicit authorisation' when every image is a collection of easily manipulated numbers?